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Document Type and Number:
Japanese Patent JPH0316333
Kind Code:
B2
Abstract:
(A process for preparing steroid intermediates of the formula in which pivaloyl chloride is added to a compound of the formula the resulting compound of the formula is reacted with a Grignard reagent of the formula wherein X is Cl or Br, and the resulting compound of the formula is cyclized in the presence of a base. Compound I in turn may be readily converted by known methods to valuable steroids. Disclosed as a mixed anhydride steroid intermediate of formula III is 7a beta -methyl-2,3,3a alpha , 4, 5, 6, 7; 7a-octahydro-1H-inden-1,5-dione-4 alpha -(3-propionic acid) pivalic acid mixed anhydride.)

Inventors:
GARI EFU KUUPAA
ARUBAATO AARU UAN HOON
Application Number:
JP14594388A
Publication Date:
March 05, 1991
Filing Date:
June 15, 1988
Export Citation:
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Assignee:
SYNTEX INC
International Classes:
C07C69/716; A61K31/585; C07C49/597; C07C49/613; C07C51/56; C07C59/205; C07C59/82; C07D317/26; C07J1/00; C07J17/00



 
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